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Effect of Evernic Acid on Structure of Spinach Chloroplasts

AuthorsRapsch, Sonia; Ascaso, Carmen CSIC ORCID
KeywordsEvernic acid
Chloroplast structure
Thylakoidal membrane
Issue Date1985
PublisherAnnals of Botany Company
CitationAnnals of Botany 56:467-473 (1985)
AbstractDetached leaves of Spinacia olerácea were incubated with evernic acid, the main phenolic substance presen! in Evernia prunastri thalli. This lichen substance produced a decrease in the amount of total chlorophyll and chlorophyll a in treated spinach leaves. Chloroplast structure suffered a decrease in several parameters, i.e. chloroplast área, number of grana, granal width, number of thylakoids per granum and starch contení. The submicroscopic structure of the chloroplast membranes revealed smaller particle diameters in several of the fracture faces in the evernic acid treated samples and even a decrease in the density of partióles in the EFS fracture face. The alterations observed may be related to changes in photosynthetic activity, probably by modification of both photosystem I and photosystem II activities.
Description11 pages, figures, and tables statics.
Appears in Collections:(IRN) Artículos

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